PDF malware analysis — malicious · 16f5fcde113533d5

MALICIOUS

PDF

88.8 KB Created: 2021-03-25 17:08:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 156f5a7b9b3fcc9d6826a3aa02317424 SHA-1: ebf7f444905be7e99d57db4a1c7fec49b450a374 SHA-256: 16f5fcde113533d5c87504b55d8b698ae72325703166569cf4cfc4a9806c987b

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests a lure related to programming queries, which aligns with the embedded URL's query parameters.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://pelibifir.ru/strik?utm_term=python+convert+list+to+string+remove+brackets
- https://cdn.sqhk.co/vibebexez/wgXKsib/murder_mystery_party_at_home_free.pdf
- http://martans.space/jovumagavinalebizrmn.pdf
- https://ronenajawewaxiw.weebly.com/uploads/1/3/4/5/134594127/7380035.pdf
- http://dafagaketa.sportsontheweb.net/39247823699.pdf
- http://krokoboko6.xyz/what_is_the_code_for_a_panasonic_tv_universal_remote923vy.pdf
- http://botefin.medianewsonline.com/30622390234.pdf
- http://cmb-accueil.com/61700449738wesqi.pdf
- https://jasixuruvixu.weebly.com/uploads/1/3/4/2/134234618/soxopuwev-xarif-sewikofiwi.pdf
- https://wazidufadik.weebly.com/uploads/1/3/0/7/130740116/bd13e8a3dd.pdf
- https://cdn-cms.f-static.net/uploads/4460477/normal_601d799e47643.pdf
- https://dabefetuxof.weebly.com/uploads/1/3/5/3/135320161/254519.pdf
- https://cdn.sqhk.co/wafexumu/if8axLx/iso_45001_audit_report.pdf
- https://cdn-cms.f-static.net/uploads/4486190/normal_60370c0f80ec6.pdf
- https://jukusixod.weebly.com/uploads/1/3/1/4/131483076/zajekefomufagasepuvu.pdf
- https://cdn.sqhk.co/wenejusuzixe/gdYDhe9/dinuvedukot.pdf
- https://cdn.sqhk.co/jawefujivi/Iiihcgd/4449464247.pdf
- https://cdn-cms.f-static.net/uploads/4446924/normal_5fdbfba533461.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://madepadejatutof.onlinewebshop.net/watts_automatic_air_vent.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00011bdc.bin` `b75b7063c284007ffbad64d01d50dab6330c07a95c921495d5b7bdf7725c2913`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11BDC	5580 bytes
`font_01_sfnt_off00012ebc.bin` `b7edd3dcfe945b71c48ecda3706aa15894e2b00e18ad7324b39cc93385bf6d72`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12EBC	11476 bytes

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